Mumbai’s Metro-3 gets its first tunnel

In a major milestone in the construction of the city’s first underground Metro corridor, the first tunnel of the 33.5-km Colaba-Bandra-Seepz (Metro-3 line) was completed on Monday.
Chief minister (CM) Devendra Fadnavis termed the breakthrough as a “historic” and “momentous” occasion.
The 1.26-km tunnel between Pali ground in Marol, Andheri (East) and the International airport terminal T2 was completed in 259 days.

https://www.hindustantimes.com/mumbai-news/mumbai-s-metro-3-gets-its-first-tunnel/story-DluK2ansDru9gFyvnhZduJ.html